An enormous iceberg that first broke off Antarctica's "Doomsday Glacier" more than 20 years ago is finally waving goodbye to the icy continent after being freed from the seafloor, which had trapped the ice chunk in place for over a decade.
The long-lived berg, known as B-22A, is the largest remaining piece of B-22, a colossal icy mass the size of Rhode Island that snapped off Thwaites Glacier — also known as the Doomsday Glacier — in March 2002. During this time, B-22A has retained a lot of its original ice and covers around 1,160 square miles (3,000 square kilometers), which is around twice the size of Houston, Texas.
